I have a watch companion app that accesses CoreData through CloudKit and then chooses a random string from the data.
It works perfectly, all of that is setup exactly as needed. So I know all of that is working.
The issue now is I am wanting the Watch complication to update sporadically with an updated random string from that data.
Here is what I have confirmed is working:
- the complication can update with the assigned variable correctly
- this variable can be assigned manually by opening the app and pressing a button
- background scheduling and refreshing is confirmed to work, I tested with print statements.
The issue now is that the goal is to make the function run with the background refresh. This function takes that data from CoreData, picks a random string, and assigns it to the variable. That variable is then displayed on the watch face complication and in the app.
The function has an if statement that says
if (the fetched coredata) .isEmpty {
(Variable) = “No Data” }
And the watch complication is showing “No Data.”
This indicates that this function is running with the background refresh but is not accessing the CoreData and is staying empty. This exact same function works fine when manually called inside the app.
TL;DR I have isolated and confirmed that CoreData is not being accessed when running a function in the background schedule on watchOS.
How do I fix this?